ROC800-Series Instruction Manual
Revised July-2017 Installation and Use 2-11
Figure 2-5. Power Connectors on the EXP Backplane
5. Pivot the back edges of the ROC827 and the EXP toward each other
until they click together.
Note: The plastic locking clips at the back of the EXP click when
the two units securely fasten together.
6. Attach an end cap to the right side of the EXP (if it does not have
one). Do not replace the wire channel covers until you finish
installing and wiring the modules in the EXP.
Note: Adding an EXP–and the modules it will hold–may require you
to adjust your ROC827’s power consumption requirements.
Refer to Section 3.2, Determining Power Consumption.
2.5.2 Removing an Expansion Backplane
Note: Before you remove an EXP, you must power down the ROC827,
disconnect all wiring from all modules, and remove the entire
unit from the DIN rail. Once the entire ROC827 is free of the
DIN rail, you can detach an individual EXP.
To remove an EXP from an existing ROC827 base unit:
1. Remove the right-hand end cap from the EXP as described in
Section 2.3.1, Removing and Replacing End Caps.
2. Remove the wire channel covers on either side of the EXP you want
to detach, as described in Section 2.3.2, Removing and Installing
Wire Channel Covers.
3. Turn the ROC827 around so that the back of the unit faces you (as
shown in Figure 2-6).
Note: It may be useful to place the ROC827 face-down on a flat
surface with the EXP you want to detach hanging free of the
surface’s edge.
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